JP2011021373A - Drainage equipment of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide drainage equipment of a building, which enables the suitable performance of a maintenance operation of a drainage passage member. <P>SOLUTION: The building is constructed from a plurality of building units including a building unit 20a constituting a bathroom 15 and an undressing room 16. A bathtub 38 and a bathroom floor pan 37 are provided adjacently to each other in the bathroom 15; and a floor surface of the bathroom floor pan 37 is formed above the bottom of the bathtub 38. A drainage unit 50 is provided below the bathroom floor pan 37. The drainage unit 50 comprises: a storage tank 51 for storing bathtub wastewater discharged from the bathtub 38; a plurality of connecting pipes 61 and 63 which are connected to the storage tank 51; and a supporting panel 52 for integrally supporting the storage tank 51 and the connecting pipes 61 and 63. A flooring material 84 of the undressing room 16 adjacent to the bathroom 15 is provided with a maintenance window portion 83. The drainage unit 50 can move to a position below the maintenance window portion 83 in an underfloor space. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a drainage facility for discharging water flowing out from a watering facility such as a bathtub, a toilet or a toilet in a building.

  In recent years, a technique for reusing remaining hot water stored in a bathtub as middle water has been proposed. For example, Patent Document 1 provides a reused water tank that stores a drainage of a bathtub discharged from the bathtub in the middle of the pipe by connecting a drain of the bathtub to a washing machine and a toilet through a pipe provided under the floor. The disclosed configuration is disclosed. According to this structure, the bathtub waste_water | drain discharged | emitted from the bathtub is stored in a reuse water tank, and the stored bathtub waste_water | drain is supplied to a washing machine and a toilet bowl from a reuse water tank as needed. Thereby, since the bathtub drainage can be reused in a washing machine or a toilet bowl, water resources can be effectively utilized.

Japanese Patent Laid-Open No. 7-60232

  By the way, since bathtub drainage flows through said piping, it is possible that the dirt etc. which are contained in bathtub drainage adhere or accumulate in piping. Therefore, it is necessary to perform maintenance work such as cleaning the inside of the pipe. However, since the piping is arranged under the floor, the maintenance work is usually under the floor. That is, since the work is a work such as inspecting and cleaning the pipes under the floor, it can be said that there is a problem in terms of workability.

  In addition, the above-mentioned problem is a problem that can occur not only in the piping but also in a reused water tank installed under the floor. In the reuse water tank, since the bathtub drainage containing dirt is stored, it can be easily assumed that the dirt accumulates in the tank. That is, the above problem can occur in all drainage passage members through which bathtub drainage flows.

  Further, the above-mentioned problem is not only a problem with drainage passage members for middle water, but also with respect to drainage passage members for guiding water discharged from bathtubs, washrooms, washing machines and the like to sewage equipment. Such a drainage passage member is generally provided under the floor, and it is assumed that it is difficult to perform maintenance work like the drainage passage member for middle water.

  This invention is made | formed in view of the said situation, and makes it the main objective to provide the drainage facility of the building which can perform the maintenance operation | work of a drainage channel member suitably.

  In order to solve the above-mentioned problems, the building drainage system according to the first aspect of the present invention includes a plurality of drainage passage members for circulating water discharged from the watering facility in the underfloor space below the flooring in the building, and the plurality of these drainage passage members. A drainage unit provided integrally with the drainage passage member, and the flooring is provided with an opening leading to the underfloor space, and the drainage unit is positioned below the opening. It is possible to move along the lower surface of the flooring.

  According to the present invention, the drainage passage member can be accessed through the opening by moving the drainage unit to a position below the opening provided in the flooring. Thereby, since the maintenance operation | work of a drainage channel member can be performed from a floor through an opening part, the same operation | work can be performed suitably.

  A building drainage facility according to a second aspect of the present invention is the storage device according to the first aspect, wherein the drainage unit includes a bathtub, and the drainage unit stores the bathtub drainage discharged from the bathtub as the drainage passage member. A tank and a piping member respectively connected to the inlet side and the outlet side of the storage tank are provided.

  For example, in a configuration in which bathtub drainage discharged from a bathtub is stored in a storage tank, and the stored bathtub drainage is supplied to a washing machine, toilet, etc. as necessary, the water is reused. It is assumed that dirt accumulates inside the storage tank. In that respect, according to the present invention, the maintenance operation of the storage tank can be performed through the opening by moving the drainage unit to a position below the opening. For this reason, it is possible to suitably perform cleaning and the like in the tank.

  A drainage facility for a building according to a third invention is the drainage facility according to the second invention, wherein the drainage unit is provided below a washroom floor panel provided at a position higher than the bottom surface of the bathtub, and the bathtub is provided. It is possible to move to an under floor space of an adjacent indoor space adjacent to the bathroom, and the opening is provided in a floor material of the adjacent indoor space.

  When the washroom floor panel is installed at a position higher than the bottom of the bathtub, it is easier to enter and exit the bathtub by lowering the straddle height of the bathtub, while the space below the washroom floor panel becomes a dead space There is. Therefore, in the present invention, the drainage unit is installed in the lower space of the washroom floor panel, so that the drainage unit can be installed while effectively using the dead space.

  In addition, since the opening for performing the maintenance work of the drainage passage member is provided in the floor material of the adjacent indoor space (for example, the dressing room) adjacent to the bathroom, the opening is different from the configuration in which the opening is provided in the washing floor floor panel. There is no need to take waterproof measures around the area. Therefore, when the opening is provided in the floor, the configuration of the floor can be relatively simplified.

  A drainage facility for a building according to a fourth aspect of the present invention is the drainage system according to any one of the first to third aspects, wherein the drainage unit is movable in an underfloor space below a plurality of indoor spaces partitioned by a partition wall. It is characterized by that.

  ADVANTAGE OF THE INVENTION According to this invention, a drainage unit can be moved in the under floor space of the downward direction of two indoor spaces which adjoin via a partition wall. Therefore, for example, even when the drainage unit is installed below the bathroom, if the opening is provided in the indoor space adjacent to the bathroom, the drainage unit can be moved to the lower part of the opening to maintain the drainage passage member. Thereby, it is possible to perform maintenance of the drainage passage member while avoiding inconvenience such as leakage of water from the opening by providing the opening in the bathroom.

  In the drainage facility for a building of the fifth invention, in any one of the first to fourth inventions, the underfloor space is provided with a guide rail for guiding the drainage unit below the opening. Features.

  According to the present invention, since the drainage unit can be moved along the guide rail to below the opening, convenience can be improved when the drainage unit is moved.

  A drainage facility for a building according to a sixth invention is the drainage facility according to any one of the first to fifth inventions, wherein the drainage unit includes a plurality of first piping members supported by the support member as the drainage passage member, and The plurality of first piping members are respectively connected to second piping members installed other than the drainage unit, and at least any of the connection portions between the plurality of first piping members and the second piping member. In addition, an elastic flexible pipe is connected between the first pipe member and the second pipe member.

  According to the present invention, the flexible piping connecting the first piping member and the second piping member expands and contracts when the drainage unit moves. In this case, for example, since the drainage unit can be moved to a position near the lower position of the opening while the first piping member and the second piping member are connected, the convenience of performing maintenance by moving the drainage unit Can be increased.

  A drainage facility for a building according to a seventh invention is the drainage facility according to any one of the first to fifth inventions, wherein the drainage unit includes a plurality of first piping members supported by the support member as the drainage passage member. The plurality of first piping members are respectively connected to second piping members installed other than the drainage unit, and at least any of the connection portions between the plurality of first piping members and the second piping member. Or a joint mechanism for switching the connection state and the connection release state between the first piping member and the second piping member by driving an electric actuator when the drainage unit is moved. To do.

  According to the present invention, for example, when the drainage unit is moved from its installation position to a position below the opening, the connection between the first piping member and the second piping member is released by driving the electric actuator of the joint mechanism. Then, when the drainage unit is returned to the installation position, the first piping member and the second piping member can be connected by driving the electric actuator of the joint mechanism. In this case, it is possible to avoid the trouble of connecting and disconnecting both the piping members by diving under the floor every time the drainage unit is moved, so that the convenience in moving the drainage unit can be improved.

  The building drainage system according to an eighth aspect of the present invention is the seventh aspect of the present invention, in which the first piping member and the second piping member when the first piping member and the second piping member are switched to a disconnected state by the joint mechanism. Closing means for closing at least the upstream piping of the piping member is provided.

  According to the present invention, after the drainage unit is moved from the installation position to a position below the opening, the upstream piping is closed among the first piping member and the second piping member, so that the upstream piping is upstream through this upstream piping. It is possible to suppress drainage from leaking from the side pipe. Moreover, it is good also as a structure which a closing signal is output to a closing means according to a movement of a drainage unit, and upstream piping is closed. In this case, since the upstream pipe is automatically closed when the drainage unit is moved, the convenience can be enhanced in suppressing water leakage from the upstream pipe.

The top view which shows the structure of a bathroom periphery. Sectional drawing which shows the structure of a bathroom periphery. The perspective view which shows the structure of a support frame. The perspective view which shows a drainage unit. Sectional drawing which shows the connection structure of an inflow side pipe and bathtub side piping. The figure which shows the slide movement of the drainage unit in under floor space. The block diagram which shows the flow of water around a bathroom, and an electrical structure. The perspective view which shows the outline | summary of a unit type building. The figure which shows the structure of the frame | skeleton in the building unit for bathrooms.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings. In the present embodiment, the present invention is embodied in a two-story unit type building constructed by a steel unit construction method. FIG. 8 is a perspective view showing an outline of the unit type building 10, and FIG. 9 is a view showing a structure of a skeleton in a bathroom building unit 20a.

  As shown in FIG. 8, the unit type building 10 such as a house includes a building main body 11 and a roof 12 disposed above the building main body 11. The building main body 11 is formed by connecting a plurality of building units 20 in two upper and lower layers, and a building unit for a bathroom constituting a bathroom 15 and a dressing room 16 is provided on the first floor portion of the building unit 20. 20a is included.

  As shown in FIG. 9A, in the building unit 20a, columns 21 are arranged at the four corners, and the upper end and the lower end of each column 21 are connected by four ceiling beams 22 and floor beams 23, respectively. Yes. A rectangular parallelepiped skeleton (frame) is formed by the columns 21, the ceiling beams 22 and the floor beams 23, and the columns 21 are made of rectangular steel in a rectangular tube shape. Moreover, the ceiling beam 22 and the floor beam 23 are made of channel steel having a U-shaped cross section, and are installed so that the openings thereof face each other. In the building unit 20a, a plurality of small ceiling beams 24 are bridged between the large ceiling beams 22 with long sides facing each other at a predetermined interval.

  As shown in FIG. 9B, in the building unit 20a, a bathroom space S1 in which the bathroom 15 is formed and a dressing room 16 in which the dressing room 16 is formed are provided adjacent to each other. In the building unit 20a, a plurality of floor beams 25 and a plurality of receiving beams 27 are bridged at predetermined intervals between the large floor beams 23 facing the long sides, and each floor beam 25 has a dressing room space. It is arranged on the S2 side. The floor beam 25 is a support member made of square tubular square steel, and both longitudinal ends thereof are connected to the upper part of the floor beam 23. On the other hand, each receiving beam 27 is arranged on the bathroom space S1 side. Specifically, among the receiving beams 27, only the receiving beams 27 arranged adjacent to the floor beam 25 are provided in the dressing room space S2. The receiving beam 27 is a support member made of square steel having a square cylindrical shape, and both longitudinal ends thereof are connected to the lower part of the floor large beam 23. According to the above configuration, the height position of the upper surface of the receiving beam 27 is set below the upper surface of the floor beam 25.

  Here, the configuration of the bathroom building unit 20a will be described with reference to FIGS. 1 is a plan view showing the configuration around the bathroom 15, FIG. 2 is a cross-sectional view showing the configuration around the bathroom 15, and FIG. 3 is a perspective view showing the configuration of the support frame 49.

  As shown in FIG.1 and FIG.2, the bathroom unit 31 which forms the bathroom 15 is installed in the building unit 20a. Next to the bathroom 15, a dressing room 16 as an adjacent indoor space is arranged, and a washing machine 32 is installed in the dressing room 16. A partition wall 33 is provided between the bathroom 15 and the dressing room 16, and a washing machine faucet 34 for supplying water to the washing machine 32 is provided on the partition wall 33. The washing machine faucet 34 is connected to the water supply device of the washing machine 32 by a connecting hose.

  The bathroom unit 31 includes a wall panel 35 that forms a wall surface in the bathroom 15, a ceiling panel 36 that forms a ceiling surface, a bathroom floor pan 37 that forms a floor surface, and a bathtub 38. 35, the ceiling panel 36, the bathroom floor pan 37, and the bathtub 38 are integrally formed. The bathroom floor pan 37 and the bathtub 38 are provided side by side, and the bathtub 38 is disposed on the opposite side of the dressing room 16 with the bathroom floor pan 37 interposed therebetween. A bathtub drain 41 is formed at the bottom of the bathtub 38, and the remaining hot water in the bathtub 38 is discharged as bathtub drain by removing the stop cock from the bathtub drain 41.

  The space above the bathroom floor pan 37 is used as a wash space, and the bathroom floor pan 37 corresponds to a wash floor panel. The bathroom floor pan 37 is disposed above the bottom of the bathtub 38, and forms a floor surface at a position higher than the bottom surface of the bathtub 38. In this case, the height dimension from the upper surface of the bathroom floor pan 37 to the upper end of the bathtub 38 is smaller than the depth dimension of the bathtub 38. That is, the span height required to straddle the side of the bathtub 38 is lower than the side of the bathtub 38. Therefore, the bather can easily move between the bathtub 38 and the washing space.

  A floor pan drain port 45 is formed at the end of the bathroom floor pan 37 on the bathtub 38 side, and the floor pan drain port 45 discharges hot water discharged from the bathroom faucet 46 and the shower head 47 as washroom drainage. In addition, the upper surface of the bathroom floor pan 37 is entirely inclined so that the floor pan drain port 45 is lowest.

  Below the bathroom unit 31, a support frame 49 is provided for supporting the bathroom unit 31 in the building unit 20a. As shown in FIG. 3, the support frame 49 is a base portion 49 a that is placed on the receiving beam 27, and a floor that stands up from the base portion 49 a and supports the bathroom floor pan 37 at the upper end portion. And a panel support 49b. The base portion 49a and the floor panel support portion 49b are each formed of a rod-shaped frame material. The base portion 49a and the floor panel support portion 49b are each formed in a substantially square shape in plan view, but have a configuration in which a part of the outer peripheral portion is removed. As shown in FIG. 2, the support frame 49 is placed on the receiving beam 27 of the building unit 20 a, and the bathroom unit 31 is installed in a state of being supported by the support frame 49. Moreover, the bathroom floor pan 37 of the bathroom unit 31 is supported by the floor panel support part 49b.

  A drainage unit 50 is provided below the bathroom floor pan 37. Here, the configuration of the drainage unit 50 will be described with reference to FIG. FIG. 4 is a perspective view showing the drainage unit 50.

  The drainage unit 50 includes a storage tank 51 for storing the bathtub drainage discharged from the bathtub 38, a plurality of connection pipes 61 to 63 connected to the storage tank 51, and the storage tank 51 and the connection pipes 61 to 63. And a support panel 52 for integrally supporting the two. Here, the storage tank 51 and the connection pipes 61 to 63 correspond to a drainage passage member, and the support panel 52 corresponds to a support member. The storage tank 51 and the connection pipes 61 to 63 are fixed on the support panel 52 by fixing members 56, respectively. In the present embodiment, the bathtub drainage stored in the storage tank 51 is supplied to the washing machine 32 and reused.

  The storage tank 51 is formed in a flat and substantially rectangular parallelepiped shape, and its tank capacity is smaller than the capacity of the bathtub 38 (for example, 200 to 300 liters) and the capacity of the washing machine 32 (for example, 30 to 60 liters). A larger capacity (for example, 80 liters) is set. The storage tank 51 is made of, for example, a resin material excellent in heat insulation, and has a function of keeping the stored bathtub drainage warm. In addition, the storage tank 51 has an opening 53 formed on the upper surface thereof, and a lid 55 that can open and close the opening 53. By opening the lid 55, the inside of the storage tank 51 is provided. Maintenance can be performed.

  An inflow side pipe 61 and an outflow side pipe 62 are connected to the opposing side surfaces of the storage tank 51, respectively. The inflow side pipe 61 is connected to the downstream end of the bathtub side pipe 71 connected to the bathtub drain port 41, and the outflow side pipe 62 is connected to the upstream side of the water supply pipe 77 connected to the washing machine faucet 34. Side ends are connected. Bath drainage flows from the bathtub 38 through the inflow side pipe 61 to the storage tank 51, and bathtub drainage in the storage tank 51 flows out to the faucet 34 for the washing machine through the outflow side pipe 62. A drainage pipe 63 is further connected to the side surface of the storage tank 51 where the outflow pipe 62 is provided. The drain pipe 63 is connected to the upstream end of a drain pipe 81 that discharges the stored water in the storage tank 51 to the outside without supplying the water tap 34 to the washing machine. Each of the connection pipes 61 to 63 is made of, for example, a resin pipe formed in a straight shape, and the tip part thereof is a hole (not shown) formed in a corresponding part on the side surface of the storage tank 51. Inserted and fixed by bonding or the like.

  An electric water supply pump 64 is provided inside the storage tank 51. The discharge side of the water supply pump 64 is connected to the outflow side pipe 62. When the water supply pump 64 is driven, the water in the storage tank 51 flows out of the storage tank 51 through the outflow side pipe 62. ing.

  The support panel 52 is made of, for example, a plywood formed in a rectangular flat plate shape. A frame frame made of a highly rigid metal such as steel may be provided along the outer peripheral portion of the support panel 52.

  Returning to the description of FIG. 2, the drainage unit 50 configured as described above is placed on the receiving beam 27 below the bathroom floor pan 37 by the floor panel support 49 b of the support frame 49. It is installed in the space to be formed (SA in FIG. 3). In such a case, the drainage unit 50 is movable in the right direction in the figure while being placed on the receiving beam 27. At this time, as described above, in the support frame 49, a part of the base part 49a and the floor panel support part 49b (a part of the outer peripheral part in a plan view) is removed. The support frame 49 can be moved in the left-right direction in the figure without hindrance. The details of the configuration in which the drainage unit 50 is movable will be described later.

  As described above, one end of the bathtub side pipe 71 is connected to the inflow side pipe 61 of the drainage unit 50. Here, the connecting portion between the inflow side pipe 61 and the bathtub side pipe 71 is provided with a joint mechanism that connects or disconnects them, and FIG. 5 shows the configuration of the joint mechanism. This will be described with reference to FIG.

  A groove 61a is formed on the outer peripheral surface of the inflow side pipe 61 with the bathtub side pipe 71 along the circumferential direction. An O-ring 73 as a seal member is disposed in the groove 61a. Further, on the outer peripheral surface of the inflow side pipe 61, a projecting portion 61b that protrudes from the outer peripheral surface is provided at a portion closer to the storage tank 51 than the groove portion 61a. The projecting portion 61 b is provided along the outer periphery of the inflow side pipe 61.

  On the other hand, the bathtub side pipe 71 is made of, for example, a hard polyvinyl chloride pipe or the like, and has an inner diameter that is substantially the same as the outer diameter of the inflow side pipe 61. The end of the inflow side pipe 61 is inserted into the bathtub side pipe 71. Specifically, in the inflow side pipe 61, the protruding portion 61 b is in contact with the distal end portion of the bathtub side pipe 71, and thus the portion on the distal end side of the protruding portion 61 b is inserted into the bathtub side pipe 71. In this inserted state, the O-ring 73 provided on the inflow side pipe 61 is compressed by the inner peripheral surface of the bathtub side pipe 71, and functions to prevent water leakage from the connecting portion in such a compressed state.

  On the outer peripheral surface of the bathtub side pipe 71, an engaging portion 75 that can be engaged with the protruding portion 61b of the inflow side pipe 61 is provided. The engaging portion 75 is rotatably provided at the distal end portion of the bathtub side pipe 71, and is engaged with the protruding portion 61b of the inflow side pipe 61 or released from the engagement by being turned. It is possible. The bathtub-side pipe 71 is provided with a drive device 76 for driving the engaging portion 75 to rotate. The drive device 76 is made of, for example, a known electric motor. Here, the driving device 76 corresponds to an electric actuator. In the present embodiment, the engagement device 75 is rotationally driven by the drive device 76 so that the engagement portion 75 engages and disengages the protrusion 61b. The connection between 61 and the bathtub-side pipe 71 and the switching of the connection release are performed. It is desirable that a plurality of engaging portions 75 (and driving devices 76) are provided along the outer peripheral surface of the bathtub-side pipe 71.

  Returning to the description of FIG. 2, the water supply pipe 77 connecting the outflow side pipe 62 of the drainage unit 50 and the faucet 34 for washing machine is configured by connecting two pipes 78 and 79. Among these, the tank side piping 78 connected to the outflow side pipe 62 is composed of a hose formed in a bellows shape, and is configured to be extendable. Here, the tank side pipe 78 corresponds to a flexible pipe. On the other hand, the washing machine side pipe 79 connected to the washing machine faucet 34 is made of a metal pipe, and extends vertically between the wall panel 35 and the partition wall 33 of the bathroom unit 31 along the partition wall 33. ing. The outflow side pipe 62 and the tank side pipe 78 are fixed by a fixing band (not shown).

  The drainage pipe 81 connected to the drainage pipe 63 of the drainage unit 50 is composed of a hose formed in a bellows shape and is configured to be extendable and contractible. The drain pipe 81 and the drain pipe 63 are fixed by a fixing band (not shown).

  In the above pipe configuration, when the water supply pump 64 is driven, the bathtub drainage in the storage tank 51 is supplied to the washing machine faucet 34 through the water supply pipe 77. On the other hand, when the stop cock is pulled out from the bathtub drain outlet 41, the bathtub drainage in the bathtub 38 flows into the storage tank 51 through the bathtub-side pipe 71.

  By the way, in this embodiment, the maintenance window part is provided in the floor part of the dressing room 16, and it is possible to move the drainage unit 50 to the downward direction of the maintenance window part. Therefore, maintenance such as cleaning of the storage tank 51 can be performed through the maintenance window. The details will be described below with reference to FIG. 6 in addition to FIG. 1 and FIG. FIG. 6 shows the sliding movement of the drainage unit 50 in the underfloor space, (a) is a plan view showing a state in which the drainage unit 50 is installed below the bathroom floor pan 37, and (b) is drainage. It is a top view which shows the state in which the unit 50 was installed in the downward position of the maintenance window part.

  As shown in FIG. 2, a floor material 84 that forms the floor surface of the dressing room 16 is provided on the ceiling beam 24 of the building unit 20a. The floor material 84 is provided with a maintenance window 83 serving as an opening that allows the dressing room 16 and the underfloor space to communicate with each other. The maintenance window 83 is provided at a position alongside the drainage unit 50 along the longitudinal direction of the building unit 20a (the direction orthogonal to the longitudinal direction of the floor beam 25 and the receiving beam 27). The maintenance window 83 is provided with a maintenance door 85 that opens and closes the maintenance window 83. The maintenance door 85 can be opened to the dressing room 16 side.

  As shown in FIG. 6, a pair of rail members 86 are provided on the receiving beam 27 in a direction orthogonal to the receiving beam 27. Each rail member 86 is provided at both ends of the support panel 52 of the drainage unit 50 and extends to a position below the maintenance window 83. In the present embodiment, the drainage unit 50 is released by releasing the engagement of the engaging portion 75 with respect to the inflow side pipe 61 (projecting portion 61b), that is, by releasing the connection between the inflow side pipe 61 and the bathtub side piping 71. Can be slid along the rail member 86. Specifically, the drainage unit 50 is movable between a position below the bathroom floor pan 37 (see FIG. 6A) and a position below the maintenance window 83 (see FIG. 6B). Yes.

  A driving device (for example, a motor or the like) for moving the drainage unit 50 along the rail member 86 may be further provided. In this case, when the drainage unit 50 is slid, the convenience can be improved.

  Next, a route through which bathtub drainage flows will be described with reference to FIG. FIG. 7 is a block diagram showing the flow of water around the bathroom 15 and the electrical configuration.

  As shown in FIG. 7, the bathtub drain port 41 of the bathtub 38 is connected to the inflow side pipe 61 of the drainage unit 50 via the bathtub side path 91 formed of the bathtub side pipe 71, and the outflow side pipe of the drainage unit 50. 62 is connected to the washing machine faucet 34 via a washing machine side path 92 formed of a water supply pipe 77. Accordingly, when the bathtub drainage is supplied from the bathtub 38 to the faucet 34 for the washing machine, the bathtub drainage flows through the bathtub side path 91, the inflow side pipe 61, the storage tank 51, the outflow side pipe 62, and the washing machine side path 92.

  The bathtub side path 91 is provided with a bathtub side valve 93 as an electric pipe opening and closing device. By opening and closing the bathtub side valve 93, the water flow in the bathtub side path 91 is permitted or blocked. In the washing machine side path 92, the water in the storage tank 51 is forcibly supplied to the washing machine faucet 34 by driving the water supply pump 64.

  The bathtub side path 91 branches into a bathtub drain path 95 that leads to the sewage facility 94 between the bathtub drain port 41 and the bathtub side valve 93. Therefore, when the bathtub drainage is discharged from the bathtub 38 to the sewage facility 94, the bathtub drainage flows into the bathtub drainage path 95 from the bathtub side path 91. The bathtub drainage path 95 is provided with a bathtub drainage valve 96 as an electric pipe opening / closing device. By opening and closing the bathtub drain valve 96, the water flow in the bathtub drain path 95 is permitted or blocked. The sewage facility 94 is a facility that handles the flowed-in water as sewage, and includes, for example, a sewer or a septic tank.

  In the bathtub drainage path 95, a floor pan drainage path 97 leading to the floor pan drainage opening 45 of the bathroom floor pan 37 is connected between the bathtub drainage valve 96 and the sewage equipment 94. Accordingly, the washing ground drainage is discharged to the sewage facility 94 through the floor pan drainage path 97 and the bathtub drainage path 95.

  In the bathtub drainage path 95, a tank drainage path 98 leading to the drainage pipe 63 of the drainage unit 50 is further connected between the bathtub drainage valve 96 and the sewage equipment 94. Therefore, the bathtub drainage in the storage tank 51 is discharged to the sewage facility 94 through the tank drainage path 98 and the bathtub drainage path 95. The tank drainage path 98 includes a drainage pipe 81.

  The tank drainage path 98 is provided with a tank drainage valve 99 as an electric pipe opening / closing device. By opening and closing the tank drain valve 99, the water flow in the tank drain path 98 is permitted or blocked.

  Next, an electrical configuration of a reuse system that performs various controls to reuse bathtub drainage will be described.

  The building 10 is provided with a controller 100 as control means. The controller 100 includes a microcomputer composed of a CPU and various memories, and is installed on the wall surface of the dressing room 16, for example. The controller 100 includes an operation unit 102 that can be manually operated. The operation unit 102 is provided with various operation buttons, for example, a storage button for supplying bathtub drainage in the bathtub 38 to the storage tank 51, and a water supply button for supplying bathtub drainage in the storage tank 51 to the washing machine 32. A maintenance start button that is operated when maintenance of the storage tank 51 is started, a maintenance end button that is operated when the maintenance ends, and the like are provided.

  A storage amount sensor 101 that detects a storage amount of the storage tank 51 is connected to the input side of the controller 100. The storage amount sensor 101 is provided in the storage tank 51, and sequentially outputs the detection signal to the controller 100.

  A water supply pump 64, a drive device 76, a bathtub side valve 93, a bathtub drain valve 96 and a tank drain valve 99 are connected to the output side of the controller 100. Based on the operation of the operation unit 102 by a resident or the like, the controller 100 performs operation control by outputting a command signal corresponding to the operation to each of the devices 64, 76, 93, 96, and 99.

  Next, the contents of control performed by the controller 100 will be described. First, the content of control in the case of reusing bathtub drainage will be described.

  When the storage button of the operation unit 102 is operated by a resident or the like, the controller 100 opens the bathtub side valve 93 and closes the bathtub drain valve 96 and the tank drain valve 99. In this case, the bathtub drainage discharged from the bathtub drainage port 41 flows into the storage tank 51 through the bathtub-side path 91. Further, the controller 100 determines whether or not the inside of the storage tank 51 is full based on the detection signal of the storage amount sensor 101. Here, when the inside of the storage tank 51 is full, the bathtub side valve 93 is closed and the bathtub drain valve 96 is opened. Thereby, after the storage tank 51 becomes full, the bathtub drainage discharged from the bathtub drainage port 41 is discharged to the sewage facility 94 through the bathtub drainage path 95.

  When the water supply button of the operation unit 102 is operated by a resident or the like, the controller 100 calculates the storage amount of the storage tank 51 based on the detection signal of the storage amount sensor 101. Here, when the storage amount of the storage tank 51 is a predetermined amount (for example, 5 liters) or more, the water supply pump 64 is driven to supply the bathtub drainage from the storage tank 51 to the washing machine 32 through the washing machine side path 92. To do.

  On the other hand, when the storage amount of the storage tank 51 is less than the predetermined amount, the water supply pump 64 is not driven. In this case, water is not supplied from the storage tank 51 to the faucet 34 for the washing machine. The water supply device of the washing machine 32 is connected with a water pipe faucet in addition to the washing machine faucet 34, and tap water is supplied to the washing machine 32 by opening the water pipe faucet.

  Next, the contents of the control when the storage tank 51 is maintained will be described.

  When the maintenance start button of the operation unit 102 is operated by a resident or the like, the controller 100 closes the bathtub side valve 93 and opens the tank drain valve 99. In this case, the inflow of bathtub drainage from the bathtub 38 to the storage tank 51 is blocked, and the bathtub drainage stored in the storage tank 51 flows out to the sewage facility 94 through the tank drainage path 98. Further, the controller 100 determines whether or not the storage tank 51 is empty based on the detection signal of the storage amount sensor 101. When the storage tank 51 becomes empty, the tank drain valve 99 is closed, and the driving device 76 is driven to disengage the engaging portion 75 from the inflow side pipe 61 (projecting portion 61b). . As a result, the inflow side pipe 61 can be pulled out from the bathtub side pipe 71, and as a result, the drainage unit 50 can be moved to a position below the maintenance window 83. When the above engagement is released, the speaker provided in the controller 100 notifies that the drainage unit 50 can be moved. Specifically, sounds such as “Please move the drainage unit” and “Start maintenance” are output from the speaker. Thereby, the resident can know that the maintenance start of the storage tank 51 is permitted.

  Further, when the engaging portion 75 is in the released state, the controller 100 controls the storage of the bathtub drainage in the storage tank 51 or the washing machine of the bathtub drainage even if the storage button or the water supply button of the operation unit 102 is operated. The water supply control to 32 is not executed. Thereby, even if water supply operation etc. are carried out accidentally at the time of the maintenance of the storage tank 51, the situation where water leaks from the part from which the connection of piping was removed can be avoided.

  When the maintenance end button of the operation unit 102 is operated by a resident or the like, the controller 100 drives the driving device 76 to engage the engaging portion 75 with the protruding portion 61 b of the inflow side pipe 61. Thereby, since the inflow side pipe 61 is connected and fixed with respect to the bathtub side piping 71, reuse of bathtub drainage is attained. After the engagement by the engagement portion 75 is performed, the controller 100 notifies the speaker that the connection of the pipe has been completed. Specifically, for example, sounds such as “completion of piping connection” and “use of bathtub drainage” are output from a speaker.

  Next, a procedure for cleaning the storage tank 51 and the connection pipes 61 to 63 will be described.

  First, the maintenance start button of the operation unit 102 is operated. As a result, when a predetermined time has elapsed, a speaker provided in the controller 100 notifies that the drainage unit 50 can be moved. After this notification, the maintenance door 85 is opened.

  Next, the drainage unit 50 is slid to a position below the maintenance window 83. In this moving operation, first, the drain unit 50 is moved to a position where the outflow side pipe 62 and the drain pipe 63 can be reached from the maintenance window 83 by pulling the tank side pipe 78 or the drain pipe 81. Thereafter, the tank side pipe 78 and the drain pipe 81 are detached from the outflow side pipe 62 and the drain pipe 63, respectively. The drainage unit 50 is moved to a position below the maintenance window 83 with these pipes 62 and 63.

  Next, the storage tank 51 and the connection pipes 61 to 63 are cleaned. In the cleaning operation, the lid 55 of the storage tank 51 is opened, and the operation of removing the dirt in the storage tank 51 and the dirt of the connection pipes 61 to 63 is performed.

  After completion of the cleaning operation, the drainage unit 50 is moved to the original installation position. This operation is performed, for example, by pushing the upper body from the maintenance window 83 into the underfloor space and pushing the storage tank 51 toward the installation position (that is, the position below the bathroom floor pan 37). Further, this operation is performed until the inflow side pipe 61 is inserted into the bathtub side pipe 71 and the protruding portion 61 b of the inflow side pipe 61 is brought into contact with the distal end portion of the bathtub side pipe 71. After the drainage unit 50 is moved, the maintenance door 85 is closed.

  Next, the maintenance end button of the operation unit 102 is operated. Accordingly, when the speaker provided in the controller 100 notifies that the pipe connection is completed, the cleaning operation of the storage tank 51 and the connection pipes 61 to 63 ends.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  A storage tank 51 and connection pipes 61 to 63 (hereinafter, abbreviated as storage tank 51 and the like) through which bathtub drainage discharged from the bathtub 38 is circulated, and a support panel 52 that integrally supports the storage tank 51 and the like are provided. The drainage unit 50 is installed under the floor of the bathroom 15 and can be moved to a position below the maintenance window 83 provided in the dressing room 16. In this case, by moving the drainage unit 50 below the maintenance window 83, it becomes possible to access the storage tank 51 and the like through the maintenance window 83, so that the maintenance operation of the storage tank 51 and the like is performed in the maintenance window 83. Can be done from the floor through. Therefore, maintenance work for the storage tank 51 and the like can be suitably performed.

  Rail members 86 extending to positions below the maintenance window 83 are provided at both ends of the support panel 52 of the drainage unit 50. Thereby, since the drainage unit 50 can be moved along the rail member 86 to the lower position of the maintenance window 83, the convenience in moving the drainage unit 50 can be enhanced.

  The drainage unit 50 is provided with a storage tank 51 for storing bathtub drainage discharged from the bathtub 38. In this case, the maintenance operation of the storage tank 51 can be performed from the floor through the maintenance window 83 by moving the drainage unit 50 to a position below the maintenance window 83. Thereby, it becomes possible to suitably carry out cleaning or the like in the storage tank 51 where it is assumed that dirt from the bathtub drainage is likely to accumulate.

  The drainage unit 50 is provided below the bathroom floor pan 37 provided at a position higher than the bottom surface of the bathtub 38. In this case, the drainage unit 50 can be installed while effectively using the space below the bathroom floor pan 37 that can be a dead space. In addition, by installing the drainage unit 50 below the bathroom floor pan 37, it is possible to expect the effect of transferring the heat of the bathroom 15 to the storage tank 51 and keeping the bathtub drainage in the storage tank 51 warm. In particular, since the storage tank 51 is formed of a material having excellent heat insulation properties, it is considered that a heat retaining effect can be obtained from this point.

  The drainage unit 50 can move in the underfloor space formed below the bathroom 15 and the dressing room 16 partitioned by the partition wall 33. In this case, maintenance of the storage tank 51 and the like can be performed through the maintenance window 83 provided in the dressing room 16. Thereby, maintenance of the storage tank 51 and the like can be performed while avoiding inconvenience such as leakage of water from the maintenance window by providing the maintenance window in the bathroom 15.

  Moreover, although it is possible to set it as the structure which provides a maintenance window part in the bathroom floor pan 37, in this case, since it is necessary to give a waterproof structure, the structure of a floor part periphery becomes complicated. In that respect, in the case of the above configuration in which the maintenance window 83 is provided in the floor material 84 of the dressing room 16, there is also an advantage that the configuration of the floor can be relatively simplified.

  The inflow side pipe 61 is connected to the bathtub side pipe 71 in a state of being inserted into the bathtub side pipe 71, and the insertion direction and the moving direction of the drainage unit 50 are set in the same direction. Then, the drainage unit 50 is moved so that the inflow side pipe 61 is pulled out from the bathtub side pipe 71 and the inflow side pipe 61 is inserted into the bathtub side pipe 71. Accordingly, the movement of the drainage unit 50 and the extraction of the inflow side pipe 61 from the bathtub side pipe 71 or the insertion into the bathtub side pipe 71 can be performed in one operation, so that the work load can be reduced. it can.

  A tank side pipe 78 that connects the outflow side pipe 62 of the drainage unit 50 and the washing machine side pipe 79 is formed by a hose formed in an accordion shape so that it can be expanded and contracted. Thereby, since the drainage unit 50 can be moved to a position near the lower position of the maintenance window 83 while the outflow side pipe 62 and the tank side pipe 78 are connected, connection and disconnection of both the pipes 78 and 79 are performed from above the floor. This can be done through the maintenance window 83. Therefore, it is possible to avoid the trouble of connecting and disconnecting both the pipes 78 and 79 by diving under the floor or the like, so that the convenience in moving the drainage unit 50 can be improved.

  The engagement device 75 is rotationally driven by the driving device 76, thereby switching the engagement and disengagement of the engagement portion 75 with respect to the inflow side pipe 61, that is, connection between the inflow side pipe 61 and the bathtub side piping 71, and Changed connection release. In this case, when the drainage unit 50 is moved from the installation position to a position below the maintenance window 83, the connection between the inflow side pipe 61 and the bathtub side pipe 71 is released and the drainage unit 50 is returned to the installation position. The inflow side pipe 61 and the bathtub side pipe 71 can be connected to each other. Therefore, it is possible to avoid the trouble of connecting and disconnecting the pipes 61 and 71 by, for example, diving under the floor every time the drainage unit 50 is moved, so that the convenience in moving the drainage unit 50 can be improved.

  Further, in the bathtub side pipe 71 upstream of the inflow side pipe 61, the bathtub that closes the bathtub side pipe 71 when the connection between the inflow side pipe 61 and the bathtub side pipe 71 is switched to the released state by the driving device 76. A side valve 93 was provided. Thereby, after moving drainage unit 50 to maintenance window part 83 side, since bathtub side piping 71 is closed, it can control that bathtub drainage leaks out from bathtub side piping 71 through bathtub side piping 71.

  The connection part between the outflow side pipe 62 and the water supply pipe 77 and the connection part between the drain pipe 63 and the drain pipe 81 are not provided with a joint mechanism having the engaging part 75 and the drive device 76, but the connection Since the part faces the maintenance window 83 side, connection and disconnection work through the maintenance window 83 is possible. Further, these connection portions may remain connected when the drainage unit 50 moves.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) In the said embodiment, although it was set as the structure which supplies the bathtub drainage stored by the storage tank 51 to the washing machine 32, it replaces with or adds to this, and the structure which supplies bathtub drainage to the toilet bowl installed in the toilet It is good. For example, the following configuration is conceivable as a configuration in which bathtub drainage stored in the storage tank 51 is supplied to the toilet bowl in addition to the washing machine 32.

  The washing machine side path 92 (see FIG. 7) is provided with a toilet side path branched from the path 92, and this toilet side path is connected to the toilet faucet. Here, the toilet faucet is configured to electrically open and close the piping. The toilet is provided with a washing button operated by a resident, and the controller 100 opens the toilet faucet and drives the water supply pump 64 based on the operation of the washing button by the resident. In this case, since the bathtub drainage stored in the storage tank 51 is supplied to the toilet bowl through the washing machine side path 92 and the toilet bowl side path, the toilet bowl can be washed using the bathtub drainage. The washing machine side path 92 is provided with a valve between the branch point and the washing machine faucet 34, and the water is supplied to the washing machine 32 side by closing the valve when the bathtub drainage is supplied to the toilet. Note that it is necessary to ban.

  (2) In the configuration of the above (1), in addition to bathtub drainage, washing drainage discharged from the washing machine 32 and washing drainage discharged from the washroom may be used as washing water for washing the toilet bowl. . Specifically, for example, a second storage tank for storing washing drainage and wash drainage is provided in the underfloor space, and the drainage port of the washing machine 32 and the second storage tank are connected via a pipe, and a washroom The drain outlet and the second storage tank are connected via a pipe. In this case, washing waste water and washing waste water flow into the second storage tank. In addition to the toilet faucet, the toilet is provided with a second toilet faucet, the second toilet faucet and the second storage tank are connected via a pipe, and a second water supply pump is provided on the pipe. Is provided. Here, when the second toilet faucet is opened and the second water supply pump is driven, the washing waste water or the wash drainage stored in the second storage tank is supplied to the toilet bowl. Therefore, in this case, washing drainage and washing drainage (hereinafter referred to as washing washing drainage) can be used as toilet flushing water in addition to bathtub drainage, and water can be further reused.

  (3) In the configuration of (2) above, tap water may be used as flush water for the toilet bowl in addition to the bathtub drainage and the washing surface drainage. Specifically, the toilet is provided with a third toilet tap in addition to the toilet tap and the second toilet tap, and a water pipe is connected to the third toilet tap. In this case, the toilet bowl can be washed with tap water even when the storage tank 51 and the second storage tank are empty. Further, it may be determined which of the bathtub drainage, the washing surface drainage, and the tap water is preferentially supplied to the toilet and the water is supplied to the toilet based on the determined priority. For example, water may be supplied to the toilet bowl in priority order of washing surface drainage, bathtub drainage, and tap water. Specifically, the second storage tank is provided with a second storage amount sensor, and the controller 100 calculates the storage amount of the second storage tank based on the detection signal of the second storage amount sensor. Here, when the storage amount of the second storage tank is a predetermined amount (for example, 5 liters) or more, the second toilet faucet is opened, the second water supply pump is driven, and the second storage tank is Supply laundry toilet drainage. Further, when the storage amount of the second storage tank is smaller than the predetermined amount, the storage amount of the storage tank 51 is calculated based on the detection signal of the storage amount sensor 101. Here, when the storage amount of the storage tank 51 is a predetermined amount (for example, 5 liters) or more, the toilet faucet is opened and the water supply pump 64 is driven to discharge the bathtub drainage from the storage tank 51 to the toilet. Supply. On the other hand, when the storage amount of the storage tank 51 is less than the predetermined amount, the third toilet faucet is opened and tap water is supplied to the toilet. From the above, washing drainage that can be used only as toilet flush water is given first priority, bathtub drainage that can also be used in washing machines in addition to toilet flushing water is given second priority, and tap water with various uses can be used. Is supplied to the toilet as a third priority. In this case, since water can be reused suitably, water can be used for a relatively long period of time even when the water is shut off.

  (4) In the above embodiment, only one drainage unit 50 is installed in the underfloor space, but a plurality of drainage units 50 may be installed. For example, in the case of the configuration of (3) above, it is conceivable to install a second drainage unit including a second storage tank in addition to the drainage unit 50. Specifically, the second drainage unit is installed on the receiving beam 27 at a lower position of the washing machine 32, and extends along the receiving beam 27 between the installation position and the lower position of the maintenance window 83. It can be moved. In this case, not only the drainage unit 50 but also the second drainage unit can be maintained through the maintenance window 83. In addition, since the second drainage unit is provided at a position where the drainage unit 50 is not interposed between the second drainage unit and the maintenance window 83, the second drainage unit moves to the lower part of the maintenance window 83 without avoiding the drainage unit 50 or the like. Can be made. That is, even in a configuration in which a plurality of drainage units are provided, the drainage units can be suitably moved.

  (5) In the above (3), the bathtub drainage from the bathtub 38 is also supplied to the toilet bowl in addition to the washing machine 32, and further the washing toilet drainage from the washing machine 32 and the washroom is also supplied to the toilet bowl. However, in constructing such a system, it is desirable to incorporate each of the water facilities of the bathtub 38, the washing machine 32, the toilet and the toilet in one building unit 20. If it does so, since each piping which comprises the said system can be integrated in one building unit, the piping length can be shortened comparatively and the advantage that the increase in piping cost can be suppressed as a result is acquired.

  (6) Although the storage tank 51 and the connection pipes 61 to 63 are provided in the drainage unit 50 in the above embodiment, the drainage unit 50 may be provided with only the storage tank or only the piping. Moreover, in the said embodiment, although it was set as the structure provided with the storage tank 51 etc. in which the bathtub drainage as middle water flows in the drainage unit 50, the drainage pipe for flowing the water discharged | emitted from the washing machine 32, a toilet, etc. to a sewer installation May be provided in the drainage unit 50.

  (7) In the space under the floor of the building unit 20a, a storage case for storing the drainage unit 50 may be provided below the bathroom floor pan 37. For example, the housing case has a pair of opposed horizontal plates, and is formed in a thin rectangular tube shape by connecting both ends of the horizontal plates shortly up and down. The storage case is installed and fixed on the receiving beam 27 at a position below the bathroom floor pan 37 with its opening directed in the direction of movement of the drainage unit 50, and the drainage unit 50 is stored inside the storage case. The configuration is as follows. That is, the drainage unit 50 is housed in the housing case in a normal installation state. When the drainage unit 50 is moved to a position below the maintenance window 83, the drainage unit 50 is moved by being pulled out of the housing case. According to the above configuration, the heat insulating material for keeping the bathroom 15 provided on the lower surface of the bathroom floor pan 37 and the like can be prevented from interfering with the drainage unit 50 by the housing case. The effect of avoiding the situation where the smooth movement of the drainage unit 50 is hindered by the interference can be expected.

  (8) In the above embodiment, the drainage unit 50 is installed in the underfloor space in the first floor portion of the building 10, but this may be changed. For example, when the building unit 20a constituting the bathroom 15 and the dressing room 16 is provided in the second floor part of the building 10, it is located in the underfloor space in the second floor part of the building 10, that is, between the first floor part and the second floor part. The drainage unit 50 may be installed in the inter-story space. In this case, since there is a concern about water leakage to the first floor portion, it is desirable that the space between the floors has a waterproof structure. As the waterproof structure, for example, it is conceivable to install a waterproof pan formed in a flat shape on the receiving beam 27 in the underfloor space of the building unit 20a. Specifically, this waterproof pan is provided so as to straddle the bathroom floor pan 37 and the maintenance window 83 in the space under the floor, and the drainage unit 50 is installed on this waterproof pan (that is, inside the waterproof pan). In this case, the drainage unit 50 can move between the lower position of the bathroom floor pan 37 and the lower position of the maintenance window 83 while being accommodated in the waterproof pan. Accordingly, when the drainage unit 50 is moved for maintenance of the storage tank 51, even if water leaks from the connection part between the connection pipes 61 to 63 and the pipes 71, 78, 81, the water is supplied to the waterproof pan. Therefore, it is possible to prevent the leaked water from flowing down to the first floor portion. Further, since the waterproof pan can be installed on the receiving beam 27 without protruding downward from the lower end of the building unit 20a, the waterproof pan is assembled to the building unit 20a in the unit factory. The building unit 20a can be transported to the construction site in the assembled state. That is, it can suppress that the man-hour increase in a construction site is accompanied. If a drain outlet is formed at the bottom of the waterproof pan and the drain outlet is connected to the tank drain path 98 via a pipe, the water accumulated in the waterproof pan is passed to the sewage equipment 94 through the tank drain path. Can lead.

  (9) In the above embodiment, an example of application to a unit type building has been described. However, the present invention is also applied to buildings having other structures such as a building constructed by a steel frame construction method and a building constructed by a conventional wooden construction method. The invention can be applied. In short, the present invention can be applied to any building having an underfloor space for installing the drainage unit 50.

  (10) In the above embodiment, when the bathtub side valve 93 is provided in the bathtub side pipe 71 and the connection between the inflow side pipe 61 and the bathtub side pipe 71 is switched to the released state by the driving device 76, the bathtub side pipe 71 is provided. Although it is set as the structure closed by the bathtub side valve | bulb 93, the structure which closes the bathtub side piping 71 does not need to be limited to this. For example, a lid member that opens and closes the opening of the distal end is provided at the distal end of the bathtub side pipe 71. When the inflow side pipe 61 is pulled out from the bathtub side pipe 71, the opening is closed by the lid member. It is good also as a structure by which the opening part is opened by a cover member, if it inserts in the bathtub side piping 71. FIG. Even in this case, since the opening of the bathtub-side pipe 71 is closed after the drainage unit 50 is moved to the maintenance window 83 side, the bathtub drainage can be prevented from leaking from the bathtub-side pipe 71.

  (11) In the above embodiment, the bathtub side pipe 71 is closed by the bathtub side valve 93 when the connection between the inflow side pipe 61 and the bathtub side pipe 71 is switched to the released state by the driving device 76. It is good also as a structure which closes the bathtub side piping 71 by outputting a closing signal to the bathtub side valve | bulb 93 according to the movement of the unit 50. FIG. For example, it is conceivable that a detection sensor for detecting the movement of the unit 50 is provided in the drainage unit 50 and a closing signal is output to the bathtub side valve 93 based on a detection signal from the sensor. In this case, when the drainage unit 50 is moved, the bathtub-side pipe 71 is automatically closed, so that convenience can be enhanced when water leakage from the bathtub-side pipe 71 is suppressed.

  (12) In the above embodiment, the driving device 76 rotationally drives the engaging portion 75 to switch the connection and disconnection between the inflow side pipe 61 and the bathtub side pipe 71. The connection structure of the pipe 61 and the bathtub side piping 71 is not limited to this. For example, the inflow side pipe 61 and the bathtub side pipe 71 may be connected by an expandable / contractible hose formed in a bellows shape. In this case, since the drainage unit 50 can be moved to a position below the maintenance window 83 while the inflow side pipe 61 and the bathtub side pipe 71 are connected to each other by a hose, convenience is improved when the drainage unit 50 is moved. it can.

  DESCRIPTION OF SYMBOLS 10 ... Building, 15 ... Bathtub, 16 ... Dressing room as adjacent indoor space, 20a ... Building unit, 27 ... Receiving beam, 37 ... Bathroom floor pan as washroom floor panel, 38 ... Bathtub as watering equipment, 49 A support frame as a floor support member, 50 a drainage unit, 51 a storage tank, 52 a support panel as a support member, 61 to 63 a connection pipe as a first piping member, 71 a bathroom as a second piping member Side piping, 76: Driving device as an electric actuator, 83: Maintenance window as an opening, 84: Floor material, 86: Rail member as a guide rail.

Claims (8)

A drainage unit comprising: a plurality of drainage passage members that circulate water discharged from a watering facility; and a support member that integrally supports the plurality of drainage passage members in an underfloor space below the flooring in the building. Is provided,
The flooring is provided with an opening leading to the underfloor space,
The building drainage system, wherein the drainage unit is movable along the lower surface of the flooring to a position below the opening. As said watering equipment, a bathtub is provided,
The drainage unit includes, as the drainage passage member, a storage tank that stores bathtub drainage discharged from the bathtub, and piping members that are respectively connected to an inlet side and an outlet side of the storage tank. The building drainage system according to claim 1.   The drainage unit is provided below a wash floor panel provided at a position higher than the bottom surface of the bathtub, and is movable to an underfloor space in an adjacent indoor space adjacent to a bathroom in which the bathtub is provided, The building drainage system according to claim 2, wherein the opening is provided in a floor material of the adjacent indoor space.   The building drainage system according to any one of claims 1 to 3, wherein the drainage unit is movable in an underfloor space below a plurality of indoor spaces partitioned by a partition wall.   The building drainage system according to any one of claims 1 to 4, wherein a guide rail that guides the drainage unit below the opening is provided in the underfloor space. The drainage unit includes a plurality of first piping members supported by the support member as the drainage passage member,
The plurality of first piping members are respectively connected to second piping members installed other than the drainage unit,
An elastic flexible pipe is connected between the first piping member and the second piping member at least one of the connecting portions of the plurality of first piping members and the second piping member. The building drainage system according to any one of claims 1 to 5, wherein The drainage unit includes a plurality of first piping members supported by the support member as the drainage passage member,
The plurality of first piping members are respectively connected to second piping members installed other than the drainage unit,
At least one of the connection portions of the plurality of first piping members and the second piping member includes a connection state and a connection release state between the first piping member and the second piping member when the drainage unit is moved. 6. A building drainage system according to any one of claims 1 to 5, wherein a joint mechanism is provided to perform the switching by driving an electric actuator.   Closing means for closing at least the upstream piping of the first piping member and the second piping member when the first piping member and the second piping member are switched to the disconnected state by the joint mechanism. The building drainage system according to claim 7, wherein:

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